<!--07.组合选择器.html-->
<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8">
    <title>07.组合选择器</title>
    <style type="text/css">
        /* 组合选择器可以让多个选择器共用同一个 css 样式代码 */
        .class01 , #id01{
            color: blue;
            font-size: 20px;
            border:  yellow 1px solid;
        }
    </style>
</head>
<body>
   <div id="id01">div标签 id01</div> <br />
   <span class="class01">span 标签 class01</span>  <br />
   <div id="id01">div标签</div> <br />
   <div>div标签id01</div> <br />
</body>
</html>

